> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify.com/xmtp/libxmtp/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> LibXMTP is a Rust library implementing the XMTP messaging protocol with MLS for secure, decentralized communication.

# LibXMTP

LibXMTP is a shared library encapsulating the core functionality of the XMTP messaging protocol. It provides cryptographic operations, networking capabilities, and language bindings for multiple platforms.

<Note>
  LibXMTP uses **MLS (Messaging Layer Security)** to provide end-to-end encrypted group messaging with forward secrecy and post-compromise security.
</Note>

## Project Status

<Warning>
  LibXMTP is currently in **Alpha** status. Expect breaking changes as the protocol and library evolve.
</Warning>

## Key Features

* **Cross-platform support**: Node.js, React Native, iOS, Android, and WebAssembly
* **MLS protocol**: Industry-standard Messaging Layer Security for group messaging
* **End-to-end encryption**: All messages are encrypted by default
* **Decentralized**: No central server controls your conversations
* **Multi-device sync**: Use XMTP across multiple installations
* **Group messaging**: Create and manage group conversations with permissions
* **Direct messaging**: 1:1 encrypted conversations

## Architecture

LibXMTP is built as a Rust workspace with bindings for multiple platforms:

```text theme={null}
libxmtp/
├── crates/              # Core Rust implementation
│   ├── xmtp_mls         # MLS protocol implementation
│   ├── xmtp_api_grpc    # gRPC API client
│   ├── xmtp_db          # Database layer
│   └── xmtp_proto       # Protocol buffers
├── bindings/
│   ├── node             # Node.js bindings (NAPI)
│   ├── mobile           # iOS/Android bindings (UniFFI)
│   └── wasm             # WebAssembly bindings
└── sdks/
    ├── android          # Kotlin SDK
    └── ios              # Swift SDK
```

## Supported Platforms

<CardGroup cols={2}>
  <Card title="Node.js" icon="node-js">
    Native Node.js bindings via NAPI-RS for server and desktop applications
  </Card>

  <Card title="iOS" icon="apple">
    Swift SDK with native performance using UniFFI bindings
  </Card>

  <Card title="Android" icon="android">
    Kotlin SDK for Android apps with AAR distribution via Maven Central
  </Card>

  <Card title="WebAssembly" icon="globe">
    Browser-based applications with WASM bindings
  </Card>
</CardGroup>

## Use Cases

* **Decentralized messaging apps**: Build secure chat applications
* **Web3 notifications**: Send notifications to blockchain addresses
* **DAO communication**: Enable secure group discussions for DAOs
* **DeFi messaging**: Add messaging to DeFi protocols
* **NFT community chat**: Create token-gated communities

## Why LibXMTP?

### Security First

LibXMTP uses MLS, the IETF standard for secure group messaging, providing:

* Forward secrecy
* Post-compromise security
* Authentication
* Confidentiality

### True Decentralization

No central authority controls your messages or conversations. The protocol is designed to work with decentralized infrastructure.

### Developer Friendly

LibXMTP provides idiomatic bindings for each platform:

* **JavaScript/TypeScript** for Node.js
* **Swift** for iOS
* **Kotlin** for Android
* **WASM** for browsers

### Production Ready

Built with Rust for memory safety and performance, LibXMTP is designed for production use with:

* Encrypted local storage
* Efficient sync protocols
* Battle-tested cryptography

## Next Steps

<CardGroup cols={2}>
  <Card title="Installation" icon="download" href="/installation">
    Install LibXMTP for your platform
  </Card>

  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Build your first XMTP app
  </Card>
</CardGroup>

## Resources

* [GitHub Repository](https://github.com/xmtp/libxmtp)
* [XMTP Documentation](https://docs.xmtp.org/)
* [MLS Protocol Specification](https://messaginglayersecurity.rocks/)
* [Contributing Guide](https://github.com/xmtp/libxmtp/blob/main/CONTRIBUTING.md)